Lathe-tool



G. W. DOVER.

LATHE TOOL. APPLICATION FILED MAYIs.-I9'I`9.

1,328,947. Patented Jan. 27, 1920.

EMMEN TUH ,GEORGE WILLIAM DovEn, or cEANsToN, RHODE isLANn.

LATHELTooL.

Specication of Letters Iatent.

Patented Jan. 27,1920.

Application inea my 16, 1919. serial No. 297,499.

To all lwhom t may concern:

Be it knownl that I, GEORGE WILLIAM DOVER, a citizen of the United States, residing at Cranston, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Lathe-Tools, of which the following is a specification.

This invention has reference to an improvement in lathe tools and more particu# larly to an improvement in a lathe tool having a plurality of cutting points.

The object of my invention is to improve the construction of a lathe tool, whereby the number of cutting'points is materially increased, vthe members having the cutting point in use adjusted to any angle required, the cutting points may be reversed and as it is only required to take the tool once to the grind stone to ygrind the plurality of cutting points, the time heretofore required to take such `toolsto and/from the grind stone, is greatly reduced. i

My invention consists in the peculiarV and novel construction of an adjustable lathe tool having two twin parallel cutting members, e'ach cutting member having four cutting points, said lathe tool having details of construction as will bev more fully set forth hereinafter and claimed.

. Figure 1 is a sidev view ci? my lathe tool. y

Fig. 2 is a top view of the Alathe tool partly in section. f 7

Fig. 3 is an enlarged transverse sectional view through the lathe tool, taken on line 3.3 of Fig.2, and w Fig. 11' is an venlarged side'view of one of the twin cutting members. 'y y f In the drawing 5 `ind'cates a holder in the form of a rectangular shaped bar having preferably a'bent end 6 which is a transverse round tapered hole 7 A rotatable adjustingmember 8v has a round tapered .hub 9 which fits in the-tapered hole 7 ,a rectangular shaped head 10 in the face of which are two parallel V shaped grooves 11.11 and a central bolt hole 12 which extends through the hub and head, as shown in Fig. 3. A-A bolt 113,. extends through the bolt hole 12 and has a screw-threaded end 14 and a rectangular shaped head 15 in the back lof whicliare two arallel V shaped grooves 16.161in` opposite y disposed relation to the grooves 11.11 in the head of the adjusting member 8: Extending out of the back of improved points sharpened the head 15 at each side of the bolt stem is a pm 17, as shown in Fig. 2. A nut 18 is in screw-thread engagement with the screwvthreaded end 14 of the bolt 13 and bears on the end 6 of the Fi s. 2 and 3.' The twln cutting members 19.19, between the head of the adjusting member and the head holder 5 as shown in of the bolt. Each cutting member is con stru-cted in the form of two square lparallel bars 120.20 connected at their Vinner'edges by a web 21, each cutting member having four cutting vpoints 22.22.22.22, and a central nick 23in their outer edges, as shown in Figs. 2 and 4. When assembled the cutting members enter the grooves in the heads of the adjusting member and bolt,l the pins 17.17 enter the nicks 23.23 in the cutting members 19.19 to locate the cutting members and the 4tool carries a plurality of cutting :the nut loosening 18 a new cutting point may be instantly swung around and. brought into use, the cuttingmembers maybe placed at any angle required for lathe/or planer use,

and' when' so placed they are rigidly secured to the holder by tightening the nut 18 on the bolt 13.'

It is evident that the cutting members 19.19 could be constructed to give any shape of cutting. point desired grooves 11.11 in the head of the adjusting member 8, and 16.16 in the bolt head 15 would be correspondingly changed and other details of construction could be varied within'the scope of the appended claims.

Having thus described.V my "invention I claim as new 1. A lathe tool 4comprising a'holding member having a transverse hole, a rotatable adjusting member-fin the transverse hole and having abolt hole and a head in which is a groove, a bolt extending throughA the bolt hole and having a head in which is a groove corresponding to the groovey in the head of the adjusting member, a cutting member in the grooves in the heads `of the adjusting member and the bolt and means on the bolt engaging with the holding member `for simultaneously clamping the cutting member between the head of the adjusting member and the head of the bolt and securing the adjusting member in the adjusted holder 5 carries two and ready `for use. lBy r in which case the i tatable adjusting member having a tapered hub in the tapered transverse hole, a bolt hole and a head in which is a groove, a bolt extending through the bolt hole and having a head in which is a groove corresponding to the groove in the head of the adjusting member, grooves in the heads of the .adjusting member and bolt and means on the bolt engaging with the holding member for simultaneously clamping the cutting member between the -hea'd ofthe adjusting member and the head of the bolt and securing the adjusting member in the adjusted position.

3. A lathe -tool comprising a holding member having a round transverse tapered hole at one end, a rotatable adjusting member having a round tapered hub in the trans verse hole, a bolt hole and a head in vwhich are two parallel grooves, a, bolt extending through the bolt hole and having a head in which are two oppositely disposed parallel grooves corresponding to the parallel grooves in the head .of the adjusting member, cutting members in the parallel grooves in the heads of the adjusting member and bolt and means on the bolt engaging with thc holding member lfor simultaneously clamping the cutting `melribers .between .the head of the adjusting member and the head of the bolt and securing the adjusting member in the adjusted position.

4, A lathe tool comprising a holding member having ,a round transverse tapered hole at one end, a rotatable adjusting member having a roundtapered hub in the transverse hole, a bolt hole and a head in which are two parallel grooves, a. bolt extending through the bolt hole and having a head in which are two oppositely disposed parallel rooves, twin cuttin members in the paralcl grooves in the eads of the adjusting member and bolt and means on the bolt engaging with the holding member for simultaneously clamping the twin cutting members between the head of the .adjusting member and the head of the bolt and securing the adjusting member in the adjusted position i 5, i A lathe tool comprising a'holding member Vhaving a round transverse tapered hole .at one end, a rotatable adjusting member havln a round tapered hub in the transverse ole, a bolt hole and ahead in `which a cutting member in the cutting barshaving a web connecting the bars and means on the bolt engagin the holding member Ifor'simultaIi/eousljfc `amping the twin cutting members between the headof the adjusting member and the head of the bolt and securing the adjusting member in the adjusted position.

6v. 'A lathe tool comprising a holding member having a bent end and a round tapered transverse hole in the bent end, a rotatable adjusting member having around tapered hub in the .transverse hole, a bolt hole and a.

head in the face of which are two parallel V-shaped grooves, a bolt extending through the bolt hole and having a screw-threaded end and a head in the back of which are two oppositely disposed parallel grooves and two pins, twin cutting members in the parallel grooves in the heads of the adjusting member and the bolt, .each of rsaid twin cutting mem-bers being in the form .of two parallel bars which'form the cutting points 'and which have a` web .connecting the bars and a central nick intheir outer edges for the pins on the headof the bolt, anut on the screw-threaded endvofthe bolt and engaging with the bent end .of the holder for simultaneously clamping the -twin cutting members between `the head yof the .adjusting member ,and 'head of theA bolt and `securing ,the adjusting member in the adjusted position. i

7. In a lathe tool -according to claim 5 the twin cutting bars having, in cross section, the shape vof the cutting points, whereby four cutting points are formed on each. cutting member. j

8. In a lathe tool according to claim 6 the twin cutting bars having in cross section, the shape .of the cutting points and a central nick in each outer edge whereby four cutting points are formed on each cutting member, as described.

In testimony whereof I have signed my name to' .this specification.

- GEORGEWILLIAM Doven. 

